CN114541643A - Prevent coincide plate structure that ftractures - Google Patents
Prevent coincide plate structure that ftractures Download PDFInfo
- Publication number
- CN114541643A CN114541643A CN202210328397.1A CN202210328397A CN114541643A CN 114541643 A CN114541643 A CN 114541643A CN 202210328397 A CN202210328397 A CN 202210328397A CN 114541643 A CN114541643 A CN 114541643A
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- bars
- reinforcing bars
- prefabricated
- laminated
- reinforcing
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 23
- 238000005336 cracking Methods 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 42
- 230000002787 reinforcement Effects 0.000 description 15
- 238000010276 construction Methods 0.000 description 10
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an anti-cracking laminated plate structure which comprises prefabricated plates arranged horizontally oppositely and lapped reinforcing steel bars positioned above the two prefabricated plates, wherein two ends of the lapped reinforcing steel bars are respectively superposed with one ends of the two prefabricated plates close to each other; the laminated slab structure further comprises a pulling-in steel bar respectively connected with the two prefabricated slabs, and the pulling-in steel bar is connected with the lapping steel bar. The invention does not need to drill holes or reserve drill holes between the two precast slabs, avoids the structure damage of the precast slabs and can prevent the cracks from appearing at the joint of the two precast slabs.
Description
Technical Field
The invention relates to the technical field of concrete precast slabs, in particular to an anti-cracking laminated slab structure.
Background
The concrete precast slabs are materials commonly adopted by modern buildings, the precast slabs are used for building a framework, and then the cast-in-place slab layer is poured on the framework, so that the construction time can be saved, and the construction period is shortened.
In the prior art, the prefabricated panels are fixed in width and length, so splicing construction is often required during actual construction, cast-in-place slab layers are cast after splicing, and after a later-stage building is finished for a period of time, the splicing position between the two prefabricated panels is often cracked due to stress of the two prefabricated panels, so that structural damage is brought to the building. In the prior art, the two prefabricated plates are drilled during construction of a cast-in-place slab layer, and then the connecting strength between the two prefabricated plates is increased in a mode of pretending to be an inverted U-shaped pulling-in reinforcing steel bar. However, the two prefabricated panels are prone to crack (during drilling), and if a reserved drill hole is adopted, the two prefabricated panels may be stressed unevenly and apply unbalanced force to the drill hole in the later period, and finally the drill hole cracks.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an anti-cracking laminated plate structure, which solves the problem that cracks are easy to occur between two prefabricated plates in the prior art.
According to the embodiment of the invention, the anti-cracking laminated plate structure comprises horizontally opposite prefabricated plates, overlap-joint reinforcing steel bars positioned above the two prefabricated plates, and concrete laminated layers poured on the two prefabricated plates, wherein two ends of each overlap-joint reinforcing steel bar are respectively overlapped with one end, close to each other, of each prefabricated plate; the laminated slab structure further comprises a pulling-in steel bar respectively connected with the two prefabricated slabs, and the pulling-in steel bar is connected with the lapping steel bar.
In the above embodiment, two ends of the overlap steel bar are connected with the two prefabricated panels through the pull-in steel bar, a filling joint is reserved between the two prefabricated panels, an anti-cracking layer is poured in the filling joint, and the connection strength between the concrete laminated layer and the two prefabricated panels is enhanced through the pull-in steel bar and the anti-cracking layer, so that cracks are not prone to occurring between the two prefabricated panels.
Furthermore, the prefabricated slab comprises transverse steel bars and longitudinal steel bars which are connected with each other, the pull-in steel bars are connected with the transverse steel bars, and the prefabricated slab further comprises concrete poured outside the transverse steel bars and the longitudinal steel bars.
Further, still include a plurality of first supporting reinforcement, first supporting reinforcement includes that the lower extreme all is connected, a pair of first connecting reinforcement of upper end articulated with the horizontal bar, and two first connecting reinforcement middle sections are connected with the overlap joint reinforcing bar.
Further, still include a plurality of second support reinforcing bars, the second support reinforcing bar includes that the lower extreme all is connected, the articulated a pair of second connecting reinforcement in upper end with the horizontal bar.
Furthermore, the first support reinforcing bars are two for one set and distribute with the second support reinforcing bar equidistance.
Furthermore, two first supporting steel bars close to each other in the two prefabricated plates are also connected with additional steel bars which are perpendicular to and connected with the lapping steel bars.
Further, the additional reinforcing bars are connected to two first connecting reinforcing bars among the two first supporting reinforcing bars, which are deviated from each other.
Further, the filling seam comprises an inverted triangular area formed by two prefabricated plates and overlapped steel bars and a vertical area positioned below the triangular area.
Furthermore, the pulling-in reinforcing steel bars comprise vertical sections and horizontal sections, two ends of each vertical section penetrate through the inverted triangle areas and then are connected with the lap-joint reinforcing steel bars and the transverse reinforcing steel bars respectively, the horizontal sections are connected with the two first connecting reinforcing steel bars, and the two first connecting reinforcing steel bars and the horizontal sections enclose a right triangle.
Furthermore, the filling seam also comprises a forward triangular area, and the forward triangular area and the inverted triangular area are respectively positioned at the lower end and the upper end of the vertical area.
Compared with the prior art, the invention has the following beneficial effects:
the two precast slabs are not easy to crack by pulling the steel bars and the anti-cracking layer, and meanwhile, the two precast slabs are prevented from being drilled or reserved;
the pulling-in steel bars are connected with the prefabricated plates in a reserved mode, and only components such as lap-jointed steel bars need to be arranged in the construction process, so that the whole construction is simple and convenient, and the construction efficiency is improved while the strength is guaranteed.
Drawings
FIG. 1 is a first general structural diagram of an embodiment of the present invention;
FIG. 2 is a second schematic diagram of the overall structure of the embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of the structure at A in FIG. 2;
in the above drawings:
the prefabricated slab comprises a prefabricated slab 1, lapped reinforcing steel bars 2, a concrete laminated layer 3, a filling joint 4, an anti-cracking layer 5, a pulling-in reinforcing steel bar 6, a transverse reinforcing steel bar 7, a longitudinal reinforcing steel bar 8, a first supporting reinforcing steel bar 9, a first connecting reinforcing steel bar 10, a second supporting reinforcing steel bar 11, a second connecting reinforcing steel bar 12, an additional reinforcing steel bar 13, an inverted triangle area 14, a vertical area 15, an upright triangle area 16, a vertical section 17 and a horizontal section 18.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
As shown in fig. 1 and 2, the present embodiment provides an anti-cracking laminated slab structure, which includes prefabricated slabs 1 horizontally opposite to each other and a steel bar 2 located above the two prefabricated slabs 1, where two ends of the steel bar 2 are respectively overlapped with one ends of the two prefabricated slabs 1 close to each other, the laminated slab structure further includes a concrete laminated layer 3 cast on the two prefabricated slabs 1, the steel bar 2 is located in the concrete laminated layer 3, a filling gap 4 is provided between the two prefabricated slabs 1, and an anti-cracking layer 5 is cast in the filling gap 4; the laminated slab structure further comprises a pulling-in steel bar 6 respectively connected with the two prefabricated slabs 1, and the pulling-in steel bar 6 is connected with the lapping steel bar 2.
In the embodiment, two ends of the overlap joint steel bar 2 are connected with the two precast slabs 1 through the pull-in steel bar 6, the filling joint 4 is reserved between the two precast slabs 1, the anti-cracking layer 5 is poured in the filling joint 4, and the connecting strength of the concrete overlapping layer 3 and the two precast slabs 1 is enhanced through the pull-in steel bar 6 and the anti-cracking layer 5, so that cracks are not prone to appear between the two precast slabs 1;
specifically, the arranged pulling-in steel bars 6 and the prefabricated slabs 1 are constructed together and reserved in the prefabricated slabs 1, the anti-cracking layers 5 are filled with polymer anti-cracking mortar, after the cast-in-place slab layer (namely the concrete laminated layer 3) is constructed, the anti-cracking layers 5 can be sunken, and the anti-cracking layers 5 are poured and leveled again.
Preferably, as shown in fig. 1 and 2, the prefabricated slab 1 comprises transverse steel bars 7 and longitudinal steel bars 8 which are connected with each other, the pull-in steel bars 6 are connected with the transverse steel bars 7, and the prefabricated slab 1 further comprises concrete poured outside the transverse steel bars 7 and the longitudinal steel bars 8. Transverse reinforcement 7 and vertical reinforcing bar 8 form the skeleton texture of prefabricated plate 1, wherein vertical reinforcing bar 8 sets up the below at transverse reinforcement 7, both form the network structure of check shape, draw steel bar 6 and each net correspond, or one or two nets at the interval set up a draw steel bar 6, form the main part of whole superimposed sheet structure like this, when cast-in-place slab layer construction, lay overlap joint reinforcing bar 2 and make each overlap joint reinforcing bar 2 correspond with a draw steel bar 6 and be connected can, then can pour concrete superimposed layer 3.
Preferably, as shown in fig. 1 and 2, the laminated slab structure further includes a plurality of first supporting steel bars 9, each of the first supporting steel bars 9 includes a pair of first connecting steel bars 10, each of which has a lower end connected to the corresponding transverse steel bar 7 and an upper end hinged to the corresponding transverse steel bar, and the middle sections of the two first connecting steel bars 10 are connected to the corresponding overlapping steel bar 2. The first supporting steel bars 9 consisting of the first connecting steel bars 10 play a role in strengthening the connecting strength between the precast slab 1 and the concrete superposed layer 3, which is realized by the connection between the first connecting steel bars 10 and the transverse steel bars 7 as well as the lap steel bars 2, similarly, the first connecting steel bars 10 are processed together with the precast slab 1 in a reserved mode, the upper ends of the two first connecting steel bars 10 are hinged so as to conveniently adjust the connection between the first connecting steel bars 10 and the transverse steel bars 7 and the connection between the first connecting steel bars 10 and the lap steel bars 2 when the precast slab 1 is processed, namely, the first connecting steel bars 10 can make corresponding angle adjustment along with the position change of the transverse steel bars 7 and the total steel bars, thereby facilitating the construction; particularly, after the prefabricated slab 1 is processed, the angle between the first connecting steel bars 10 is fixed, the upper ends of the two first connecting steel bars 10 can be further welded, and the overlap steel bar 2 can also be welded with the first connecting steel bars 10, so that the connecting strength is enhanced.
Preferably, as shown in fig. 1 and 2, the laminated slab structure further includes a plurality of second support bars 11, and each of the second support bars 11 includes a pair of second connecting bars 12 having lower ends connected to the transverse bars 7 and upper ends hinged to each other. Similar to the first supporting steel bars 9, the second supporting steel bars 11 are also constructed together with the precast slabs 1 in a reserved mode, and are also conveniently adjusted to use the transverse steel bars 7 and the longitudinal steel bars 8, while the second supporting steel bars 11 are not connected with the overlapped steel bars 2, because the second supporting steel bars 11 mainly play a role in strengthening the connection strength between a single precast slab 1 and the concrete overlapped layer 3, and the first supporting steel bars 9 strengthen the connection strength between two integral precast slabs 1 and the concrete overlapped layer 3; furthermore, first support reinforcing bar 9 two is a set of and with the equidistant distribution of second support reinforcing bar 11, namely an overlap joint reinforcing bar 2 is connected with four first support reinforcing bar 9, makes overlap joint reinforcing bar 2's length need not be overlength like this.
Preferably, as shown in fig. 1, 2 and 3, the two first supporting bars 9 adjacent to each other in the prefabricated panels 1 are further connected with additional reinforcing bars 13 perpendicular to and connected with the overlapped reinforcing bars 2. The additional reinforcement 13 that sets up is parallel with horizontal reinforcement 7 promptly, and additional reinforcement 13 is located and is used for strengthening the joint strength between first connecting reinforcement 10 (first supporting reinforcement 9) and the overlap joint reinforcing bar 2 in the concrete superimposed sheet 3, and then has further improved overall structure's intensity, and further, two first connecting reinforcement 10 that deviate from in additional reinforcement 13 and the two first supporting reinforcement 9 are connected.
Preferably, as shown in fig. 1 and 2, the filling gap 4 comprises an inverted triangular area 14 formed by the two prefabricated panels 1 and the overlap reinforcing steel bar 2 and a vertical area 15 positioned below the triangular area, and further, the filling gap 4 further comprises an upright triangular area 16, and the upright triangular area 16 and the inverted triangular area 14 are respectively positioned at the lower end and the upper end of the vertical area 15. The concrete poured in the filling joints 4 is different from the concrete of the precast slabs 1 and the cast-in-place slab layer in material, the filling joints 4 mainly play a role in resisting acting force exerted between the two precast slabs 1, polymer anti-cracking mortar is adopted, and the precast slabs 1 and the cast-in-place slab layer are conventional concrete mortar, so that the overall cost can be reduced, and meanwhile, the strength requirement is ensured;
in particular, the space of the regular triangle area 16 is smaller than that of the inverted triangle area 14, so that the polymer mortar proceeds into the inverted triangle area 14 when collapsing (shrinking), the density of the upper end of the filling seam 4 is greater, and the regular triangle area 16 at the lower end is filled after pouring again, so that the strength of the entire filling seam 4 is enhanced.
Preferably, as shown in fig. 1 and 2, the tie bar 6 includes a vertical section 17 and a horizontal section 18, two ends of the vertical section 17 are connected to the overlap bar 2 and the transverse bar 7 after passing through the inverted triangle area 14, the horizontal section 18 is connected to the two first connecting bars 10, and the two first connecting bars 10 and the horizontal section 18 enclose an upright triangle. The pulling-in steel bar 6 is used for enhancing the connection strength of the transverse bar and the lap joint steel bar 2, and meanwhile, the connection between the pulling-in steel bar 6 and the first supporting steel bar 9 is enhanced, so that the strength of the whole structure is improved; in particular, the horizontal section 18 and the two first connecting rebars 10 form an equilateral triangle, so that the connecting strength of the pulling-in rebars 6 and the first supporting rebars 9 is better, and finally the connecting strength of the whole structure is increased.
The connection among the reinforcing steel bars is realized by a binding mode, and meanwhile, a welding mode can be replaced.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The anti-cracking laminated slab structure is characterized by comprising horizontally opposite prefabricated slabs, overlap joint reinforcing steel bars positioned above the two prefabricated slabs, and concrete laminated layers poured on the two prefabricated slabs, wherein two ends of the overlap joint reinforcing steel bars are respectively superposed with one ends, close to each other, of the two prefabricated slabs; the laminated slab structure further comprises a pulling-in steel bar respectively connected with the two prefabricated slabs, and the pulling-in steel bar is connected with the lapping steel bar.
2. The split-preventing laminated slab structure as claimed in claim 1, wherein the prefabricated slab includes transverse reinforcing bars and longitudinal reinforcing bars connected to each other, the pull-in reinforcing bars are connected to the transverse reinforcing bars, and the prefabricated slab further includes concrete poured over the transverse reinforcing bars and the longitudinal reinforcing bars.
3. The anti-crack laminated plate structure as claimed in claim 2, further comprising a plurality of first supporting bars, wherein the first supporting bars comprise a pair of first connecting bars having lower ends connected to the transverse bars and upper ends hinged to each other, and the middle sections of the first connecting bars are connected to the overlapping bars.
4. The split-resistant laminated plate structure as claimed in claim 3, further comprising a plurality of second supporting reinforcing bars, the second supporting reinforcing bars comprising a pair of second connecting reinforcing bars having lower ends connected to the transverse reinforcing bars and upper ends hinged to each other.
5. The split-resistant laminated panel structure of claim 4, wherein the first support bars are grouped in two and are equidistantly spaced from the second support bars.
6. A laminated cracking-resistant panel structure according to any one of claims 3 to 5, wherein the first supporting reinforcing bars adjacent to each other in the two prefabricated panels are further connected with additional reinforcing bars perpendicular to and connected with the overlapping reinforcing bars.
7. A split-resistant laminated panel structure as claimed in claim 6, wherein the additional reinforcing bars are connected to the two first connecting reinforcing bars of the two first supporting reinforcing bars which are turned away from each other.
8. An anti-crack laminated panel structure as claimed in claim 7, wherein the filling seam comprises an inverted triangular area surrounded by two prefabricated panels and overlapping reinforcing bars and a vertical area located below the triangular area.
9. The anti-crack laminated plate structure as claimed in claim 8, wherein the pull-in reinforcing bars comprise a vertical section and a horizontal section, both ends of the vertical section are connected with the overlap reinforcing bars and the transverse reinforcing bars respectively after passing through the inverted triangular region, the horizontal section is connected with the two first connecting reinforcing bars, and the two first connecting reinforcing bars and the horizontal section enclose an upright triangle.
10. The crack-resistant laminated panel structure of claim 9, wherein the filling seams further comprise right-angled triangular regions, the right-angled triangular regions and the inverted triangular regions being located at the lower end and the upper end of the vertical region, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328397.1A CN114541643A (en) | 2022-03-31 | 2022-03-31 | Prevent coincide plate structure that ftractures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328397.1A CN114541643A (en) | 2022-03-31 | 2022-03-31 | Prevent coincide plate structure that ftractures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114541643A true CN114541643A (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210328397.1A Pending CN114541643A (en) | 2022-03-31 | 2022-03-31 | Prevent coincide plate structure that ftractures |
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| Country | Link |
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| CN (1) | CN114541643A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898714A (en) * | 2019-04-02 | 2019-06-18 | 上海应用技术大学 | The close spelling connection structure of fibre sheet material concrete bidirectional laminated slab and implementation method |
| CN210530083U (en) * | 2019-02-27 | 2020-05-15 | 中民筑友科技投资有限公司 | Connecting structure of bidirectional composite floor slab |
| CN112982692A (en) * | 2021-03-05 | 2021-06-18 | 中信建筑设计研究总院有限公司 | One-way superimposed sheet joint connecting structure and construction method |
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2022
- 2022-03-31 CN CN202210328397.1A patent/CN114541643A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210530083U (en) * | 2019-02-27 | 2020-05-15 | 中民筑友科技投资有限公司 | Connecting structure of bidirectional composite floor slab |
| CN109898714A (en) * | 2019-04-02 | 2019-06-18 | 上海应用技术大学 | The close spelling connection structure of fibre sheet material concrete bidirectional laminated slab and implementation method |
| CN112982692A (en) * | 2021-03-05 | 2021-06-18 | 中信建筑设计研究总院有限公司 | One-way superimposed sheet joint connecting structure and construction method |
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